<template>
  <div class="article-case">
    <!-- 展示给用户看的 -->
    <div class="form-preview" v-show='!edit'>
      <!-- <h2 >{{article.title}}</h2>
      <small>{{article.channel?article.channel:''}}</small> -->
      <h2 v-text='article.title'>文章标题</h2>
      <small v-text="article.channel?article.channel:''">文章频道</small>
      <a class="btn-edit" href="#" @click="open">编辑</a>
      <!-- <a class="btn-edit" href="#" @click="edit=!edit">编辑</a> -->
    </div>

    <!-- 编辑状态 -->
    <div class="form-edit" v-show="edit">
      <div class="form-item">
        <div class="label">标题：</div>
        <div class="input">
          <input  type="text" placeholder="请输入标题" v-model='form.title'/>
          <!-- <input  type="text" placeholder="请输入标题" v-model='article.title'/> -->
        </div>
      </div>
      <div class="form-item">
        <div class="label">频道：</div>
        <div class="input">
          <select v-model="form.channel">
            <!-- <select v-model="article.channel"> -->
            <option value="">请选择频道</option>
            <option value="前端">前端</option>
            <option value="运维">运维</option>
            <option value="测试">测试</option>
          </select>
        </div>
      </div>
      <div class="form-item">
        <div class="label"></div>
        <div class="input">
          <button class="cancel" @click='edit=!edit'>取消</button>
          <button class="submit" @click='fn1'>确认</button>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
// 实现思路：
// 1. 控制显示隐藏
// 2. 进入编辑状态，输入框需要回显 （设置输入框的值）
//    (1) v-model 和 表单元素绑定
//    (2) 一显示的时候，设置绑定的变量的值

export default {
  name: 'ArticleCase',
  data() {
    return {
      edit: false,
      article: {
        title: '如何成为一名前端老鸟？',
        channel: '前端',
      },
      form: {
        title: '',
        channel: '',
      },
    };
  },
  methods: {
   open(){
     this.edit=!this.edit
     this.form={...this.article}
    //  this.form.title=this.article.title
    //  this.form.channel=this.article.channel
    // this.article={...this.article}
   },
   fn1(){
    // 转到初始页面的样子
    this.edit=!this.edit
    this.article={...this.form}
    //  this.article.title=this.form.title
    //  this.article.channel=this.form.channel
    // this.article={...this.article}
   
   }
  },
};
</script>

<style scoped lang="less">
.form-preview {
  position: relative;
  display: flex;
  align-items: center;
}
.form-preview h2 {
  font-size: 18px;
  font-weight: normal;
}
.form-preview small {
  font-size: 12px;
  display: inline-block;
  padding: 2px 6px;
  background: #27ba9b;
  color: #fff;
  border-radius: 2px;
  transform: scale(0.8);
}
.form-preview .btn-edit {
  font-size: 12px;
  display: none;
  text-decoration: none;
  color: #069;
  margin-left: 20px;
}
.form-preview:hover .btn-edit {
  display: block;
}
.form-edit {
  padding-top: 20px;
}
.form-item {
  display: flex;
  margin-bottom: 20px;
  align-items: center;
}
.form-item .label {
  width: 60px;
  text-align: right;
  font-size: 14px;
}
.form-item .input {
  flex: 1;
}
.form-item input,
.form-item select {
  appearance: none;
  outline: none;
  border: 1px solid #ccc;
  width: 200px;
  height: 40px;
  box-sizing: border-box;
  padding: 10px;
  color: #666;
}
.form-item input::placeholder {
  color: #666;
}
.form-item .cancel,
.form-item .submit {
  appearance: none;
  outline: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 10px;
  margin-right: 10px;
  font-size: 12px;
  background: #ccc;
}
.form-item .submit {
  border-color: #069;
  background: #069;
  color: #fff;
}
</style>